Clawber the Spark Stealer

Whenever a player casts an instant or sorcery, place
X +1/+1 counters on a target artifact equal to the mana cost of the spell.

Whenever Clawber the Spark Stealer blocks a creature, select a instant or sorcery from the attacking player's graveyard. Until your next end step, Clawber's controler may cast that spell using mana of any color.

Partner